I want to ask you on your experiences and opinions on a problem I recently experienced:

       Games              +                Money            =                War!

About 3 weeks ago, I made with 2 other guys a game for Global Game Jam. The work was flawless and we had a lot of fun. We were very proud of the first prototype and decided to sell an improved and extended version.

Sounds good, doesn’t it?

But it isn’t. The guy, who is sort of the team master, offered me 5%  and our graphics designer 20%.
This is in fact ridiculous. I created the sounds of the game, translated the game to English and did take a major part in Game Design. Also our graphics designer would be under-payed.

Currently I’m trying to team up with him to get more money – 50% for the coder and team master, 30% for the graphics designer and 20% for me would be fair.

Did you experience similar problems? Have you any suggestion how to deal with them?

EDIT: Things have mostly cleared. Thank you all for you answers.
Also keep in mind, that this post only reflects my point of view.